The scab belongs to the exogenous tissue at the wound, which can protect the wound in the early stage. To make the scab fall off quickly, we should ensure that the wound can heal quickly, do not have infection, ensure the blood circulation supply, and consume more food containing protein and vitamin C. Firstly, protein is the main component of granulation tissue and collagen, if protein intake is insufficient it will delay the wound healing. Secondly, vitamin C. Vitamin C also affects collagen formation, so eat more fresh fruits and vegetables. Then, supplementation with micronutrients, such as zinc, which makes up the oxidative enzymes in the cells, thus allowing the skin and tissues to heal faster. In addition, the scab itself has benefits and disadvantages. Its disadvantage is that it is harder and may interfere with or delay wound healing and normal activities when it is difficult to fall off in the later stages of wound healing, so it needs to be cut in the hospital if necessary.